DUTCH Test: Complete Guide to Hormone Testing

Overview

The DUTCH Complete is a comprehensive assessment of sex and adrenal hormones and their metabolites. It includes the daily free cortisol pattern, organic acids, melatonin, and 8-OHdG (oxidative stress marker). It tests 35 hormone metabolites plus 6 organic acid markers. The test is organized into three sections: Sex Hormones, Adrenal Hormones, and Additional Markers (OATs).

Test Variants

When to Order

• Heavy, painful periods
• Irregular menstrual cycles
• PMS/PMDD symptoms
• Perimenopause/menopause symptoms (hot flashes, night sweats)
• PCOS evaluation
• Monitoring bioidentical hormone replacement therapy (BHRT)
• Fatigue and suspected adrenal dysfunction
• Mood disorders (anxiety, depression, irritability)
• Skin issues (acne, hair loss, hirsutism)
• Sleep disturbances
• Libido changes

Collection Timing

Premenopausal women: Must collect during luteal phase (days 19-22 of a 28-day cycle)

Menopausal women: Can collect any time Men: Can collect any time

Sex Hormone Section

The Hormone Cascade (Pregnenolone Pathway)

Pregnenolone ("grandfather hormone")
├── → Progesterone (ovary, post-ovulation)
│   ├── 5α pathway → a-pregnanediol (GABA-enhancing, calming)
│   └── 5β pathway → b-pregnanediol
└── → DHEA (adrenal gland)
    └── → DHEA-S → Androstenedione → Testosterone
        ├── → DHT (via 5α-reductase, more potent androgen)
        └── → Estrogens (E1, E2, E3)

Key Sex Hormone Markers

5α-Reductase Activity Fan Gauge

Shows preference for 5α vs 5β pathway for testosterone metabolism:

• High 5α activity: More DHT production → acne, hair loss, PCOS symptoms
• High 5β activity: Less androgenic effects, more cortisol clearance

Estrogen Metabolism — CRITICAL FOR CLINICAL PRACTICE

Phase I Detoxification (3 pathways)

The Pie Chart: Shows percentage utilization of each pathway. Ideal: dominant 2-OH pathway.

4-OH Pathway Branch Point:

• 4-OH → Methylated (via COMT) = neutralized ✅
• 4-OH → Quinones = DNA damage ⚠️

Clinical Pearl: If 4-OH is high AND methylation is poor (slow COMT), this represents a HIGH-RISK pattern for estrogen-related cancers. Support with DIM, I3C, cruciferous vegetables, adequate B vitamins for methylation.

Phase II Detoxification (Methylation via COMT)

The COMT (catechol-O-methyltransferase) enzyme methylates Phase I metabolites to make them water-soluble for excretion.

COMT Speed Fan Gauge:

• Fast COMT: Efficient estrogen clearance, may clear catecholamines too fast (low dopamine/norepinephrine)
• Slow COMT: Poor estrogen clearance → estrogen dominance risk, also affects neurotransmitter clearance

Supporting Slow COMT: Magnesium, SAMe, methylated B vitamins (methylfolate, methyl-B12), avoid excess catechol-containing supplements (quercetin in high doses can slow COMT further).

Phase III (Gut — β-glucuronidase)

Not measured on DUTCH but critically important:

• High β-glucuronidase (measured on GI-MAP) → estrogen recirculation
• Cross-reference with GI-MAP β-glucuronidase levels

Adrenal Hormone Section

HPA Axis Overview

Stress → Hypothalamus (CRH) → Pituitary (ACTH) → Adrenal glands → Cortisol + DHEA

Cortisol Markers

Cortisol Pattern Interpretation

Cortisol Awakening Response (CAR) — DUTCH Plus only

• Measures cortisol at waking, +30min, +60min
• Healthy: 50-75% rise within 30 min, returns to baseline by 60 min
• Blunted CAR: Depression, burnout, PTSD, chronic fatigue
• Exaggerated CAR: Acute stress, anxiety, anticipatory stress

Melatonin

• Measured as 6-OH melatonin sulfate
• Works inversely with cortisol (high cortisol = low melatonin and vice versa)
• LOW: Sleep disturbances, circadian disruption, impaired ovarian function
• Important for: Ovarian health, antioxidant protection, immune function

Organic Acids Section

Cross-References to Other Labs

Clinical Pearls

1. Estrogen dominance is relative: Can be high estrogen OR low progesterone — look at the ratio
2. Don't just look at totals: Metabolism matters more than levels. Good levels + bad metabolism = risk
3. COMT is bidirectional: Affects both estrogens AND catecholamines — slow COMT patients often have anxiety AND estrogen issues
4. Cortisol and thyroid: Cortisol preference for cortisone vs metabolized forms is heavily influenced by thyroid. Always assess thyroid when cortisol looks abnormal
5. Supplement timing matters: Certain supplements (chasteberry, DIM) should be timed to cycle phase
6. HRT monitoring: The DUTCH excels at monitoring bioidentical hormone therapy — can see if hormones are metabolizing safely
7. Men can use DUTCH too: Testosterone metabolism, estrogen clearance, and adrenal health all relevant

Common Pitfalls

1. Wrong collection timing in premenopausal women (not in luteal phase) invalidates progesterone results
2. Birth control affects results — must note on requisition
3. Oral progesterone won't show on dried urine — use DUTCH for transdermal/vaginal forms
4. Don't supplement for 24-48 hours before collection (B vitamins, DHEA, pregnenolone especially)
5. Hydration matters: Over-hydration dilutes samples. Follow collection instructions precisely